keil uVision3, c programming

[fibi]

can anybody pls help me, with regards to the extracting of information from a DS1302 trickle-charge timekeeping chip. I will be needed to activate a programmable trickle charger. Also known as the backup battery.


In general, i need help in the extracting of informations from the DS1302 real time clock chip and also the enabling of the backup battery. EVERYTHING SHALL BE IN KEIL C PROGRAMMING. NOT ASSEMBLY CODE!!!


The following is my code, which is currently able to do the displaying and incrementing of the clock values. Pls help me as in where and how, i can add the additional coding to myn existing source code.

#include <at89c51xd2.h>
#include <string.h>
#include <absacc.h>
#include <DS1302_Driver.h>

             
#define LCD_data P0
#define RS	P1_0
#define RW	P1_1
#define EN	P1_2

unsigned char Lcd_Data[]= {'C','L','O','C','K',':'};

void Lcd_Initial(void);
void Lcd_Command(unsigned char Command);
void Lcd_Busy();
void delay(unsigned char time);
void Lcd_Write(unsigned char Data);
void T0Delay(void);
void Lcd_Clock_Display();
void LCD_Print();
void Timekeeper();
int i,d;

unsigned char ascii_sec1 = 0, ascii_sec2 = 0, ascii_min1 = 0, ascii_min2 = 0, ascii_hour1 = 0, ascii_hour2 = 0;
unsigned char sec = 0 , min = 0 , hour = 12 , count = 0;


void main (void)
 {
	
   	Lcd_Initial();
	Lcd_Command(0x01);
	Lcd_Command(0x1c);		             //move right
	Lcd_Command(0x1c);		             //move right
	for(i=0;i<7;i++)		             //loop to display 12 characters
	{
		Lcd_Write(Lcd_Data[i]);          //print data from unsigned char Lcd_Data
	}

	TMOD = 0x01;
	TH0 = 0x97;
	TL0 = 0xD6;
	TF0 = 0;
	TR0 = 1;
	EA = 1;
	ET0 = 1;

	
	while(1)
	{
		Lcd_Clock_Display();
	}
	

  }		

void Lcd_Initial(void)
{  
   
    Lcd_Command(0x38); 		// function set : 2-line display 			   
    Lcd_Command(0x0C); 	               // display on , cursor off 
    Lcd_Command(0x01);		// clear screen

 }

 void Lcd_Command(unsigned char Command)
{

	Lcd_Busy(); 
   	EN = 0;
   	RS = 0;
   	RW = 0; 
   	delay(5); 
   	EN = 1;
   	LCD_data = Command; 
   	delay(5); 
   	EN = 0;

}

void Lcd_Busy()
{

   	unsigned char i,j;
    for(i=0;i<40;i++)              	//A loop for delay
    for(j=0;j<20;j++);

}

void delay(unsigned char time)
{

 	unsigned char x;
	for(x=0;x<time;x++);	        //delay subroutine

}

void Lcd_Write(unsigned char Data)
{

   	Lcd_Busy(); 
   	EN = 0;
   	RS = 1;
   	RW = 0; 
   	delay(5); 
   	EN = 1;
   	LCD_data = Data; 
   	delay(5); 
   	EN = 0;

}

void Timekeeper()	interrupt 2					
{

	TF0=0;					
	TH0 = 0x97;
	TL0 = 0xD6;
	count++;
	
	if(count == 50)
	{
	   	count=0;

		sec++;

		if (sec == 60)
		{

		sec = 0;min++;
		}
		if (min == 60)
		{
		min = 0;hour++;
		}	
		if (hour == 24)
		{
		sec = 0;
		min = 0;
		hour=0;
			
		}
	}
}

void Lcd_Clock_Display()
{
	ascii_sec1 = (sec/10) | 0x30;
	ascii_sec2 = (sec%10) | 0x30;
	ascii_min1 = (min/10) | 0x30;
	ascii_min2 = (min%10) | 0x30;
	ascii_hour1 = (hour/10) | 0x30;
	ascii_hour2 = (hour%10) | 0x30;
	Lcd_Command(0xC0);
	Lcd_Write(ascii_hour1);
	Lcd_Write(ascii_hour2);
	Lcd_Write(':');
	Lcd_Write(ascii_min1);
	Lcd_Write(ascii_min2);
	Lcd_Write(':');
	Lcd_Write(ascii_sec1);
	Lcd_Write(ascii_sec2);	
	sec1 = (sec/10) | 0x30;
	sec2 = (sec%10) | 0x30;
	min1 = (min/10) | 0x30;
	min2 = (min%10) | 0x30;
	hour1 = (hour/10) | 0x30;
	hour2 = (hour%10) | 0x30;
	Lcd_Command(0xC0);
	Lcd_Write(hour1);
	Lcd_Write(hour2);
	Lcd_Write(':');
	Lcd_Write(min1);
	Lcd_Write(min2);
	Lcd_Write(':');
	Lcd_Write(sec1);
	Lcd_Write(sec2);
}